Deep groove ball bearings
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W638/4-2Z-Stainless steel deep groove ball bearing
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Main Dimensions & Performance Data

Model

W638/4-2Z

d

4 mm

od

9 mm

B

4 mm

C

0.364 kN

C0

0.114 kN

Pu

0.005 Pu

reference speed

140000 r/min

limit speed

70000 r/min

weight

0.93 kg
Mounting dimensions

d1(mm)

5.2

d2(mm)

D1 (mm)

D2 (mm)

8.1

r1,2 min (mm)

0.1

da min (mm)

4.8

da max (mm)

5.1

Da max (mm)

8.2

ra max (mm)

0.1

kr

0.02

f0

6.5